Glen is right on there... The racing surface has
NOTHING to do with the cage. Build it to SCTA
specs, you'll meet/exceed ECTA, NHRA, etc. A
full cage with more gussets than you'd expect,
a "funny car" loop around the driver's area for
good measure, full containment seat. Build by
the rule book and you're golden. Mike Reichen
with the Evo 4 lives in/around Chicago, he may
know of a reputable shop.