is this a good deal?

i think this might be a good deal that im going to look at tonight. running slant6 with 4 speed out of an 85 dodge van for $200. i know the trans would have gear ratios for a truck, but is there anything less desireable about a slant 6 from the 1980s? it has over 100k and needs tuneup. im looking to get a motor that i can build for hot rodding. im thinking it must be a super six being in a van, but not sure yet.as far as the 4 speed, i know it would be cool to put in my valiant, but i most likely wont. is the trans very desireable that anyone knows of?