Hi Dan,

If you have installed a 498492, No Hassle kit, but now would like to lower your car, yes, you can use the same rotors and calipers and purchase the AC Industries lowered ball joint disc spindles, part #415025, and bolt it all together.

https://socalautoparts.com/product/lowered-disc-brake-spindles-fits-66-77-bug-ghia/

Please understand that when you install lowered spindles, the wheel and tire will move outwards approximately ½”.  Please look and confirm that with your tire and wheel combination that you will be OK, so the tire will not rub on the fender.

Thanks, Andy