any concerns with mileage?
I wouldn't be worried with the mileage. I would get new retainers while the heads are torn apart.
any concerns with mileage?
It should not cost $2k in just parts. Get a custom set spec'd for you.. should be around $1k. Livernois sells springs good enough for aftermarket cams, and utilize the stock retainers/keepers. They are $350 I believe.