I have a pair of OEM engine mounts for the 4.2L GMT360's. I sold my Envoy before I got around to installing them, so these are brand new and unused. These are the good GM mounts and not the bad aftermarket ones.
Will they fit in a medium flat rate box or do you need to use a large one? How about $115 for medium or $120 for a large one, insured for $100 and shipped to 98125?
FWIW, medium flat rate boxes are $12.35 and large are $16.85. $100 insurance is $2.50ish according to USPS. http://postcalc.usps.com/