the starquest guys are on the fence about the roller rockers because they are a different rocker ratio and from a different motor. also they have tried roller rockers on slipper cams with not so good results. there are a set that comes on the late 80's early 90's galants and expo's that are either from a SOHC G63B or the 4G64 in the van. the roller cam and rockers gave the motor about a 15-18hp boost to haul around the 4 door galant and bigger van. a good performance up-grade if you can fine them and have a SOHC