D.G. Header

Looking for some info and insight from anyone who has purchased and installed a D.G.Header within the past few years.

What sort of info are you after I installed a set on one of my 1300's about 45 (1980) years ago,  If I recall it was pretty basic install. 

I'm replacing my original DG of 33yrs(s) and am curious of about more recent installs relating to quality and fit.

Ok that I can't answer don't know if they have changed their quality of build over the yrs or not I saw a post by Carver220b about installing a DG system