well i got the 37's tonight and they are bad a$$ <img src="/forums/images/graemlins/grin.gif" alt="" /> <img src="/forums/images/graemlins/grin.gif" alt="" />. i had never seen mtr's unmounted. those things are think and hard as crap. i hope ill be aight with the 37's and stock birfs, but ill carry spares. i am going to keep the front open untill i do longs, then drop in a lockrite. with the front open i think i should do ok. thanks for the help.