hello all, newbie here.. i haved a 2.5 n/a diahatsu diesel engine in my c reg 90 commercial..... and it's not good at hills, not at all.. one of my friends wants to give me an engine, a 2.7td out of a trooper. is there anything i should know about it all? will it fit? will it go fast...

i have a c reg 90 commercial with winch bumper and superwinch and some dints...