Might try jack at Muscle Motors on the Borla or PM ....NOTA4RE, Kendall has a like new used one for sale at a discount to new. I saw it and it looks pristine.
The perches are adjusters sold by T&A , search T&A on the forum and you will find a link to Alex. Search T&A elsewhere and :eek
I have lowered my car car, you can find some info searching for my posts CobraR1339. The consensus has been to lower both front and rear. Like 1" front and 3/4" rear. I did 1" front and was shooting for about 3/8", but ended up 1/2" rear, I wanted a little rake . No downsides to this so far, except you need to be a bit more careful on steep driveways. Adjusteres are available in black or red anodized. They are high quality parts. We found that the instructions will get you right on if you have a light weight muffler. It will come out about 1/8-1/4" lower in back with the stock muffler. The Borla is 35lbs vs. 65lbs, vs. say 15 lbs for Accufab. The GT guys will know what to do.
The tune will void the warranty IMO. Will the tune cause a failure, so far none reported, that I can tell. If the GTguys are doing it, they have a good handle on what is safe IMO. I was impressed with the Heffner pulley and tune combo for 91 octane. No detonation and no mafia device required. Others have had similar reviews and it makes a tad over 600rwhp safely.
Hope that Helps.
