Brian
For T Bird applications
Before you let your pricing point make a decision about your headers,consider some of these thoughts.
None of the Sanderson headers are equal length whereas the FPA design is.
The Sanderson design is not firing order specific.I have an eMail into FPA about this and am waiting an answer to see if the FPA design is so.
Coatings are availiable on the FPA design-more money.
I have not looked into anything other than the FPT 55-57 T Bird part.
The FPA product was not included in the test.I believe that only a few have this product on this Forum so unfortunatly it was not included in the testing.
Depending ENTIRELY upon what sort of engine you are building,the Sanderson units would be better than the stock factory exhaust.
The FPA units would be a better choice for a higher revving,more modified machine and I believe would show an improvement over the Sandersons in that area if price is not a real concern and preformance is.
I"m going with the FPA design for my T Bird.
Oldmics