Best one is a matter of opinion, but I would recommend one of the sets with a cross bar that attaches to the seat bolts. Get them welded in too instead of just bolting the subframes.
I dont know for a fact , but I would imagine that the rollbar rule is about safety, so the subframes wont help there.
BTW is it 12's or 11's that require a cage? (I dont know much about 1/4 mi rules
)
If you really want to stiffen the car up, go for a engine crossbrace and reenforced torque boxes too.
Hope this helps,
J
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'66 Mustang Coupe- AKA "Lenore" *on disability for a (long) bit*
'93 GT Mostly stock AKA "Fawkes"
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