has he bought the pistons yet? If not, I'd recommend getting something else unless he's going to spray. You can go way higher than 10:1 safely. I'd recommend b16a pistons (or b16b pistons if you've got good gas in your area). Cheaper than aftermarket, and just as effective as anything for a mild lsvtec.

lsvtecs have been known to make up to ~220 hp and ~150 tq in streetable trim, but it will take more work than it looks like you and your buddy are doing at the moment.