Contact Mike at TRZ Motorsports. These guys are the who's who when it comes to making a Gbody hook. They are at the track every week testing. Their following is ridiculous (Ask Dusty B.). He has seen first hand what happens when the perches are not reinforced after a coilover kit is in place with a hard launch. The choice is yours..... I personally will not roll that dice after talking with him before I bought my Acfo double adjustable coil overs. It's just insurance, the cost will be pennies to strengthen, but the carnage......