Just to clarify , is the 4 inch chop already done?
As for seats I have the buckets from a 94 cavalier 2dr. had to refab brackets on driver side to make it fit. Have the middle seat of a dodge caravan as rear seat. Took it off it's frame and have it sitting on angle iron cross pieces that bolt to 2xn rect tubing which sits on the side subrails. All this in progress , not done