2 questions.

[vspec]

first,is it possible,and how hard would it be to put an s30 front end on a s130?

second,is it possible to put an after market blow off valve on a stock 280zx turbo?

[vspec]

umm bump.

[evildky]

with enough welding anything is possible but if you really want an S30 go buy one, there isn't enough of a difference to justify all the fad work needed to make the conversion

BOV yeah you can add one just gotta weld a flange to the "J" pipe, but you'll want a recirculating type as with the stock ECU you'll get a momentary rich condition between shifts negating the benefit of the BOV