Tremec Kit Question

I'm planning on installing a Tremec TKO600, 0.64 OD (I want the close ratios, otherwise would go with the TKO500). Classic Motorsports Group has discounted their Tremec kits by $500, but I have a concern with their design. It requires completely cutting out the hump section of the t-bar crossmember and bolting in a piece they supply. Anyone have any experience or opinions?

Ron
67 Notchback