Oh, I get it now. Well, all the tubular lowers have that, even the knock-offs, and accept the 'shims' for adjustment. Pirate Jack has a set that some of the most affordable I have found:
https://piratejack.net/1964-1972-che...-shim-spacers/
Keep in mind that the amount of height increase is double the thickness of the shim/spacer.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
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1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
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