That clutch is a 140mm or 5¢" triple plate Quarter Master brand. This one has enough holding power for a generous turbo setup but will only have to live behind 280Hp or so in a 2200# car. Pretty easy life depending on the driver working the pedals.

Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.