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JPit,
Well on my car I did the exhaust different than ERA has it. I saw too many FIA's that looked like they were riding too high in the front and the exhaust was just barely off the ground. On my car I "notched" the outer frame extensions and boxed them in where I removed the material. I basically took a 4" hole saw cut out the material and then re welded a curved piece back. The results are my exhaust sits actually higher than my frame in the front then flairs a little more downward in the rear. The only downside is there is more heat build up but I just installed more Dyna mat there to help and it's perfect. In my opinion mine looks more "original" and definitely works great. I haven't ever scrubbed one time over any speed bumps.
As for the Trigo's, I believe they only offer one offset for the ERA FIA. I got mine from Lynn Park at the time he still owned them and he knew exactly what I needed. The wheels are different front to back also in bolt hole spacing. The adapters work great and the wheels "ARE" the right ones for the car ( they look better than others). I run 235 60 15 up front and 295 60 15 in the rear. My car absolutely drives fantastic and handles pretty impressively with low speed rated tires! The 17" wheels don't look bad but there is a lot of compromise with both. The 15" tires are getting harder to come by and most here say the Avon's are the way to go. As far as lowering your car, be careful as when you lower the car not only do you change the corner balances BUT you will have to re align the both ends of the car. Do you have any rear end shims for the jag rear end, they are special. I set my car up exactly as ERA suggested and then had to add shims to both sides of my rear end. I actually put drivers weight in the seat also. With 235lbs in that seat it does have an effect on how it's set up. The front I eye balled (2 foot level and a tape measure) and when I took it in to be aligned the drivers side was perfect and the passenger side needed only a couple 1/8 shims.
There is a lot more involved when lowering these cars, not that it's hard just involved. There is a lot of things to consider and I would call Doug at ERA for advice too, he's tha man! Glad to hear you got everything worked out and are now enjoying the car! If you email me, I'll try and dig up some pics of my exhaust mods. Best Regards, Matt
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