should i keep my chargecooler type intercooler on my legacy or should i fit a front mount to my project car which is best.

looking for around 300 hp already have exhaust and filter want to up the boost a little but want to keep it nice and cool

front mounts are always a better option, but watch where you run the link pipes, as you dont want them getting anywhere near the exhausts or manifolds,otherwise you will be defeating the object by re-heating the cooled charge air. And, please dont use silicon hoses to link everything up, only use such where you have to join the alloy pipes, as the silicon hoses expand too much with the air pressure, thus loosing all the boost pressure your engine needs.
Careful planning now, prior to purchase and fit, will make fitting and running so much easier as even the best mount kits can give headaches.