Should I trade my 87swb for a 85 swb?????

[87_350]

Well I was looking online and found a 85 swb that has some mods done to it and has a 400 motor,new interior,cowl hood, and rear roll pan with corvette style tail lights ....and well mine has a 91 suburban front end....new bench seat 350 tbi motor cd player and lots of other small stuff .... But is it worth trading.....since 87 was the last year of the square body????