So I recently bought a John Deere 2030 from a local in my area for 950$. Now all that I knew is that it was was used heavily and the motor is seized pretty good. I've now had the tractor for about 3 months and I've slowly been working on it piece by piece on a 0$ budget and let me tell you it's a big project. The first thing i did was put a good battery in it and try to start it, with no response other than a clicking noise from the starter so it is seized for sure. The next thing I did was remove the hood, and body panels to see what i was working with, about 30 years of built up oil, dirt, grease, and birds nests which i was expecting other than that every thing was there. So I remove the starter and proceeded to put, what i refer to as a "beaver tail bar" but is similar to a crow bar with a flat end, on the flywheel gear and tried to pry both directions but the motor was not moving at all so with that out of the way I check the oil and notice water leaked from the dip stick hole when i removed it which explains the motor being locked up. So what I think is that someone left the exhaust uncovered for years while it was sitting outside but no big deal I can deal with that Right? Well maybe. I removed the cylinder head by detaching all connections, removing the head bolts, and using strength to lift the cylinder head from the motor which I believe is a John Deere 4.219 4 cylinder gasoline motor which i assume is hard to find parts for since it is gasoline and not diesel. Upon removing the cylinder head I was met with a gush of water and coolant mix which poured out for a good 30 seconds as if it were pressurized which raised red flags for me because if there is that much water then the motor could be a loss but I'm no expert. So I knew I had to drain the oils to get an idea of what the internals were looking like so I remove the drain plug for the oil and it was 90% water and 10% oil, at this point I regretted buying this tractor but I fell in love with the look, and history of it. So I moved the tractor into a larger shop space that I had and filled all 4 cylinders with engine oil and PB blaster And it was about this time i noticed all 4 pistons were at the same level in the cylinders half way through the compression stroke, like i said im no expert but I don't think that's normal. After letting the oil sit and soak the sleeves and pistons I tried the beaver tail bar on the flywheel teeth again with the same result so i thought the only solution was to get the motor out and by itself to free it up. After splitting the tractor into 3 sections (1.front wheels and fuel tank, 2.engine and 3. Rear wheels and transmission) I put the motor on boards and Jack stands for further evaluation while storing the other sections until i needed them. So my question is, where do I go from here the tractor is gonna need rewiring, New gauges and probably some other odds and ends. Is it worth it? Should i keep working on it or sell the parts?