The old style MTRs are similar to the hmmwv tires, but these new ones are different. I have them in 37s. They grip well, are strong and seem like they will last a while. I did manage to punture a sidewall on one of mine though on a ridiculously sharp rock.
As for the hydro assist, I am really just wondering how the lines are run. I am planning on using my stock pump, but I see you got a Toyota one, so it's going to be a bit different.
Ah true. But but the stock pump still may not have enough power to pump the fluid to get use out of the ram. That's why I to get a high performance one from psc and they don't do nissan. So I'll make do with the toyota pump.
Both are 14 in springs since the shock has a 12 in travel. Have to wait till i get full weight on it to make sure all is good but it should be close