finding correct parts

[trimmer99]

I would like to change out several parts on my mostly Eddystone rifle. In the past before purchasing this rifle I came across a site where you could send in your mismatched parts (for $35 I believe) and they would send back the correct parts. Has anyone here used this service? Is it reputable? If so where could I find it again. Thanks in advance. RB

[M1Garandy]

I think it was www.oldguns.net/catacc.htm