Just recieved my dougs d450 headers Wowwww

I see what you mean. At least they wont scrape on speed bump's,lol..

As for changing plug's I've always found it easy with a wrench or socket to crack it loose and pop a vacuum hose over the end! Turn's it out (or in) pretty fast.

Yes needsaresto .. rubber hose always works great for installing the spark plugs .