I will agree the calvert stuff is made well, but the fact that all I can get out of him is " you & your car are crap & my stuff is perfect" is what has me pissed! I have 5.5 inches of frontend travel,90/10 shocks everything is loose & free. I have tried every adjustment possible tire pressue from 22 down to12 psi. no preload,1/4 turn, 1/2 turn, top hole bottom hole, shocks from 4-9. off idle launch to 2500rpm. nothing works for me! This was numerous passes @ each adjustment, no just one or two. I put them on in june & have went thru 3 sets of tires testing with no improvement! Calvert just keeps saying "if you put a two step on it will work better". Maybe in different parts of the country the NHRA rules are different but here in Va. I run pro/mod & a street class & a two step is NOT allowed on anything but a stick car. It is really funny that everyone I've had watching the car @ the starting line and seeing the video's says its spinning but he cant see it! Also before I could leave @ 2500rpm with no spin , now I can only launch @ 2000rpm or it blisters the tires. If it was hooking sooo good , then why is it spinning on a harder launch???? If it needed more wheel speed to get better 60' then why is it spinning? Last week I talked with a chassis shop & the guy said he'd be glad to look @ the car ,but, it sounded to him that I had done everything he would have! His advice was put my stuff back in & demand a REFUND! He did say they work good on 8-9 second cars with trans-brakes, but I should not have to build a new car to make them work!! I know every car is different, and as stated I am not a chassis expert, but can read & follow directions. I have been bracket racing for 30years, so its not my first rodeo. I would like to thank everyone for thier feedback,& if yours works I am happy for you,but I guess I'm just not smart enough to make them work! If they have a problem with A body's, they never said so, or won't admit it in fear of loseing a sale. I just finished my last points race,despite the poor 60's finished 5th in points.Now thats the points races are over, I will be calling calvert monday & demanding a full refund! Sorry I won't be giving them away for a small price, I am a firm believer of getting what I pay for!