Realistically, how much could you safetly boost into a s70 glt engine which is the 2.4 lpt? And roughly how much hp are those blocks good for? Im new, srry if this is a dumb question...
if your dad is worried then maybe you should look into purchasing a cat back exhaust from ipd. I believe they are around 650. It makes parents feel better when a part is made from an big company rather then a custom job from a local shop. The only downside would be that you will pay a premium for the name.