Well, for starters how do you expect to physically add new muscle tissue without adding weight? Unless you plan to drop the same amount of weight in bodyfat, you will add some weight. So, I guess what you want is a good recomposition stack. For those goaks here is what I'd run. You can get everything from
www.sarmsx.com
1-12 Mk-2866 25mg per day dosed in the am
1-12 S4 50mg per day split 25mg am and 25mg 4-6 hours later
1-12 GW 20mg per day dosed 30 minutes preworkout
1-12 LGD 10mg per day dosed in the am
PCT
Clomid 50/25/25/25
GW 20mg per day
(PM me for a price list for Biotech Labs and 10% discount)