marc Lifetime Supporter Sep 30, 2013 #1 On the P4 the motor mount to the side sponsons is similar I think to the GT 40s. Do you put a backer behind the mounts to sandwich the aluminum or does it depend on the power level of the motor? I am using a LS 7 mostly stock.
On the P4 the motor mount to the side sponsons is similar I think to the GT 40s. Do you put a backer behind the mounts to sandwich the aluminum or does it depend on the power level of the motor? I am using a LS 7 mostly stock.
