Looking at 2 engines for this 76 and we need some input here, one is a 1997 C8.3 12 valve i think 325hp cummins mechanical engine with an MD3060 allison 6 speed similar to the one I have in the 77 that works very well. The other is a 2003 ISC 8.3 24valve electronic engine 325-350hp not sure, with the same MD3060.
The 2003 is obviously more money and a little more labour to install. What would you do??
