Is there any difference in the heat rating between the black and silver?
Roughly what range of exhaust housing sizes will they fit? (I doubt I'll have an issue with my wimpy 0.84 A/R T4 housing)
How much clearance would I need to fit one of these on? Or how much do they compress? My Aspec short runner mani puts my exhaust housing REALLY close the LIM, it almost touches the EGR blockoff plate.
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'93 RX-7 (GT3574 track toy)
'74 Triumph TR6 (weekend cruiser)
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