Availability may B more of'n issue than cost. I saw some great bits'n pieces on the Holley site, Mr. Gasket brand may help, the "Help section" (boards w/plastic cover & a hole to hang @ prts store) R a few, my scrap pile in the corner of the garage floor (twisted & bent metal that some would hammer into good shape, drill out & affix springs) and Matt @ vintage inlines . com who caters to our i6 motors are some additional possibilities.
a pic can help as I'm not certain the exact piece U need (alternatively a detailed explanation can suffice).
W E L C O M E !!!
AND
Let us know how U do...