Trying to decide between the T56 Magnum or TKO600

[rogue]

Motor is a zz502 that will eventually end up being around 670ft/lbs or torque. Car spends the majority of its time at HPDE events and the occasional road trip. I'm looking for the extra fuel economy and more speed.

Just got off the phone with Classic 5 speeds.

The guy told me to go with the T-56 Magnum 6 speed i would need the following:
T-56 Magnum 6speed $3645
Aluminum Scattershield $485
Hydraulic Clutch Kit $545

Total $4675

Or he recommended I just go with the TKO600 5 speed for $2895 and it uses all my existing bell housing and clutch linkage...

TKO600 would be at 2500rpm @ 80mph top speed 190mph
T-56 would be at 2000rpm @ 80mph top speed 240mph

So I guess the real question is, is it worth an extra 2k to do 240mph and where the hell would I ever get to go that fast. Not even Cal Speedway. Only place would be time trials events.

Seems like the TKO600 is the smart choice?