904 parts upgrades

Just looking for some guidance and where to purchase these extra parts if needed . I’ve just ordered the turbo action FMVB through Summit and while the VB is out is there any other upgrades I can do ? . I’ve got the billet rear servo, 5.0 2nd band lever and the HD front band strut in my shopping cart through A&A Transmissions Just seeing if there is any thing else before I place an order. A little background Trans was rebuilt 6 years ago using the Raybestes Red plates, Altos steels, bolt in sprag, extra plate in the front drum ,Kevlar rear band , modified pump to take the larger torque converter snout custom built 3000 stall for my car,MP pan Transgo 2 kit. Now engine has been upgraded 408 solid roller 355 rear end in a DD weight with me in it 1520kg -3351Lbs.