1 If you cannot lock the brakes "at will" on a 65-9 Corvair [ Chevelle units] something is wrong! 2 Kelvar shoes will more than suffice! Matt Nall / Patiomatt / WCUH / Chairman V V 69 Monza Cpe., 66 Monza vert, 65 Crown v8 Cpe. Somewhere between Reno, NV and Coos Bay, Or.