Tis a very good conversion which allows you to run 65mph in 2nd gear.
No other gearbox you can have built will be able to do that FWD in an E/FRST
Also the Gear ratios are setup for a decent engine to get 160mph+ from a STD box.
Any after market stuff can be added like ATB etc..
An MTX75 can be bought for as little as £50 and will last for years without any problems running upto 330bhp without issues.
Any other questions please ask.
Regards
Jano