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I have been reading posts/reviews both good and bad about Gronk Performance. I have tried his website with no luck. Seems like he has steadily been going downhill for quite some time now. I would really like to make the 2100-2150 conversion and get rid of all the clutter of vacuum lines and associated things. Can someone tell me if he is still in business? ...
You could check ebay for his products.
I got one of his offshore 2150 & adapter. I specified: new not reman, AMC Eagle 258 with 4.0 head, choke combo of electric & hot air (HX inline with the coolant out of the intake manifold), focus reliability & fuel economy. Worked out of the box without adjustment, except for bending the bracket to adjust the throttle spring tension, and adjusting the 'kick-down' so the trany isn't trashed. I did have a chore tracing down all of the vac sources to either use or cap. Others have had to rebuild theirs. This appears to be a YRMV. I'd recommend the 2150 over 2100, just so it's something slightly more 'modern'.
He's still listing on ebay. Kit with carb, or adapter kit (studs & gaskets).
https://www.ebay.com/usr/ehrmannmphttps://www.ebay.com/p/1223345683Don't be so quick to get rid of the vac stuff. First understand what each does and brings to the table, then pick and choose. Emissions requirements in your area are a factor too.
Once you're back, you'd be surprised how much you can do yourself.