Cool. Thanks Freddy. I was pleased with the performance of the stock GST 7.7 shocks that I figured I'd go ahead and try the alum ones. Got both sets for under $60 off the bay.the id of the cen 7.7 is identical to the hellfire & big bore shocks. the cen shafts are identical in length and dia as the hellfire shafts. i know this because i ran the cen 7.7 shafts and plungers in my alloy big bore shock bodies on my nitro savage (allanq has them now.
i never tried a spring swap but they have to be the same dia because i did use cen 7.7 preload spacers on my big bores as well.