If it`s going to cost 600 quid to rebuild stronger(plus the cost of any parts you may have already broken) it may be better to put 300-400 extra towards it and find a decent used tremec complete with bellhousing,clutch etc.
Also watch out for any guarantees the remanufacturers offer as there is usually some hidden smallprint such as "Warranty not applicable to racing, competition or misuse."
I may be in the same boat as you soon, having built mine with a Toyota Supra Turbo box. Some people get away with massive torque, some don`t
Good luck either way.
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There is a fine line between "hobby" and "mental illness."
You don`t have to be mental to build a kitcar - but it definitely helps.
GD JAG mk4 progressing slowly - almost ready for SVA
