F16 at C25XE???

Hello all together have a somewhat questionable project before and I have been looking for a very long transmission. So I found the F16W355 so F16 gears (Is longer than the F28 6 gears) but I don’t know how much power or torque the gears can withstand?! (It should fit… as a “Big Block” Opel gears, right?) maybe someone from you has experience… with “bitsl” more power on such a gears Greeting