industrial slant 6

OKAY Guys I need some Help as to weather I should buy this engine It's a 1990 /6 industrial engine it has been rebuilt and this man wants $500 for it . The engine I have in MY duster right now is out of a 1978 VOLARE .I know I will most likely have to have to change the oil pan and oil pick up also I'm going to put My manifold with carb. is there else that I need to know or any reason I couldn't use it in My car