I am going to pull my turbo on my 2000 550 this winter to replace the housing to get rid of my turbo surge and do the EBPV delete. Since I'm going to have everything pulled off, I figure I might as well take care of some other stuff while I am at it (going to replace my glow plugs and valve cover harnesses). Should I go ahead and replace the up pipes now? I've heard of people having issues, but I'm not sure how common it actually is. The stock ones are not leaking and the truck only has 86k on it, so it probably isn't necessary, just wanted some opinions.