So I just recieved my 4-1's from carpy.Now I know why they are relatively inexpensive,rough,raw,needs a bit of finishing compared to the $400 ones I got last time.have not tried to install them yet,we'll see.I got studs for this instead of the bolts.I sold the last set because I could not get them to seal for the life of me.I am going to do a bit of polishing and smoothing ,then I will powdercoat em.