lucky for you guys i own an sw20 with agx struts all around. i can tell you it is a stiff ride but i like it. i also own a ra65 and i know those guys use the mr2 agx REAR inserts for their FRONT coilover conversions. the idea behind it is the mr2 is a mid engine making those sturts valved for engine weight plus the frame body panels ect. so put them where the engine is. Also it would almost make sense to me to use the mr2 rears for the front of a st165. same engine, nearly the same trans, probably close to the same front clip weight. now for the REAR of the st165 using the sw20 FRONT agx makes sense. imo the sw20 agx is a little on the stiff side so it should ride ok on 1 and take the weight of the st165 alright. im sure the rear of an st165 is more than an sw20, but imo shouldnt mess with the valving too much. of course this is assuming the sw20 rear inserts would fit. i might go grab my old sw20 rear inserts and throw some measurements up for you guys if i can find the time.