I have the wide version of the CR1's in my '69 and they fit great. I'm 6'"3 and 200 lbs.... the sliders fit perfect and go way farther back than the stock ones. I have plenty of leg room. The standard width would be tight on me.
My only comment... the fabric material is alittle "cheap" and has some sun fading on the upper parts....but for the price, they are a great seat.
I highly recommend you try your best to actually sit in some seats before you buy them....what fits one guy may not feel right to another. I almost bought the TRS version but once I sat in them, I didnt like the bolsters etc. It can be hard to find places to "test sit" stuff but its worth it. ASk some other cars guys in your area..... I asked alot of guys at shows....just be sure you are clean and nothing in the pockets etc...