I am about to the suspension upgrade on my 86' 4KCSQ this week. I have decided on the Boge Turbo Gas shocks, but haven't decided whether to get the Eibach ProShock spring set, or the H&R spring set. I definitly want to get the suspension stiffer, but not too much lower. Would like to increase performance, handling more than anything. Anyone with suggestions, experience? Thanks Nick out