Hi Tim,
I take it the 'quality bits comin off etc' are the mounting brackets? These were redesigned using much stronger material.
I also believe that the GRS intercooler was designed and manufactured before Radtec designed theirs. I started making my intercoolers in 2002, and yes Christian had the VERY first twin pass intercooler I made. Over the years I’ve redesigned this model and even change the type of core used.
If you need any reference’s regarding quality and after sales service please do let me know and I’ll email them to you to help reassure you…