No much in a glide to lighten as far as rotating mass goes, aluminum drum and carrier is about it. Total glide weight is another thing, I build a light weight glide for a customer. I weighed several cases and found the TSI was the lightest, did an aluminum drum, pump, and valve body, and did the Sonnax stamped aluminum pan. We ended up 23lbs lighter than his JW trans. Other was to free up hp would be to go with the big piston drum and the sonnax servo, this will let you lower line pressure while maintaining the same clamping force. A bolt together converter with an aluminum cover will also free so hp.