Markel's service is, OK. The seem to be a reasonable price for things, they just always seem to run into snags. That and they don't do a very good job of calling you back.
Rusport sounds good.
Flukey where is Rennart in ChiTown. I might swing by to check out how their exhaust sounds. See if it's worth the money. Also when might you be leaving? Another E92 owner and I are going over to tire rack to see what will and won't fit on the front of my car.
Don't forget the picnic this weekend at Saylorville, that's a weekend event.