custom built
this is 1 of two shops, there's a trans shop and converter shop.i had the trans shop do my trans on my 10 sec. gn,didn't last 5 passes so i wouldn't recommend the trans shop for a car with that much power.as far as the converter shop a friend of mine had one he said he liked it on a low 12 sec. car personally ther are many other converter companies that are nationally known i'd go with one them.