Hi my other Coupe will be my track car its a 16VT . I need to know if this turbo will be too big for the engine . The engine has 60,000 miles ,Tipo 16v camshaft , front mounted intercooler ,boost controller,uprated pump, external waste gate and it will be running shortly speeduino stand alone ECU .Looking for no more than 300bhp I know this is a cheap chinese Turbo and did a lot of research on you tube and if it lasts for one season i will be happy This is the turbo i am thinking of getting Any help appricated especially 16VT owners https://www.ebay.co.uk/itm/GT30-GT3037-GT3076-T3-Flange-A-R-6-Turbine-A-R-82-Water-Turbo-Turbocharger-AMD/402273885049?_trkparms=aid%3D555021%26algo%3DPL.SIMRVI%26ao%3D1%26asc%3D225114%26meid%3D714bcd7ca91646669311dde7beee8e96%26pid%3D100008%26rk%3D2%26rkt%3D10%26mehot%3Dco%26sd%3D233771702934%26itm%3D402273885049%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplRVIAMLv5WebWithPLRVIOnTopCombiner&_trksid=p2047675.c100008.m2219

That's going to be super laggy, I'd look at a 30/71 bearing unit but it'll set you back £1500 and a remap.

I'm so out of date with turbo's and sizing now, but if that is meant to be a GT3076 it is massive overkill for 300BHP. I run the GT3076 and that makes 400bhp. Plus I'm on 0.63 housing and not the 0.82 as listed so will have even more lag that CountryCrusiing already mentioned.

If you want 300bhp I'd also look at upgrading the injectors as this are generally good for 280bhp-ish and that is with max duty being run.