i'm currently in college, my major is automotive mechanics. i'm taking and engine recondishioning class this coming semester. I have a non-working 81 300D that a friend was going to buy off me and make work. but that deal has fell throught. i was thinking of pulling the engine and rebuilding it for my 84 300SD. the question is, what diffrences are there between the engines. the turbo is odvous, but is there internal diffrences to the engine? would i be able to build a long block and then bolt on the turbo and all other accesories?

if the engine is useable what should i do to it? any spacific problem areas that are easly fixable with the engine in peices? how expencive is an engine kit? where can i get an engine kit?

any advice that you guys can offer would be great. i don't have a ton of money, but the calss has a great machine shot that i'll have full access to, so if there is any machine work that would usuly be out of the question due to price, i'll have an opertunity to atempt it. i'm also intrested in any preformance upgrades that i might be able to install on/in the engine... i'd like to hear your ideas of a dream engine and then i can work down from there.

thanks

Nik