How much does it cost to BPU a 3000gt vr4

I want to buy a early 90's 3000gt vr4 for a daily driver. What does it cost to do BPU and what does it entail? Thanks.

It can be pretty cheap. Gutting the cats doesn't cost anything but time. An open air filter can be had for about $100 bucks. A manual boost controller can be a $3 valve used for fishtanks or a $150 electronic one. Those few things will give you some extra get up and go.