Rear engine crossmember

[whitewallslick]

I know I have seen this covered somewhere but I can't find the tread. I have a '66 LWB that already had a sbc & th350 installed when I got it. I noticed that there is a very intrusive crossmember below where the trans meets the engine that from what I've read was for rear engine mounts for an I6. Did V8 trucks have this crossmember? Have you guys removed this crossmember? If so, is it just a matter of grinding the rivets off? If it doesn't need to be there, I want it gone.
Thanks!