First off, gotta love the commitment to these trucks.
Like your Moose pump... I'm still in the market for, but has been delayed a year $$$$.... I've been pricing and waiting for the $$$ to build back up again, as well as a Hypermax I've priced and been saving for.
Besides the $$$, I still need to install new cab bushings, oversized to create clearance fr larger and added exhaust for the system.
I would gladly buy a turbo at that price and greater air flow.... but would be concerned about head bolts, thus needing to convert to studs.... another $400.00.
Why tell all of this? Because I'm interested, but it does take some effort to get to that point on a consumers list of to do's.
We too are a business, and not everything we offer is sold every day. Sometimes only once a year, but we still offer it. I'm more in the camp of offer it and they will come. What has to be decided is if the effort is worth it to "you"!
As a business, we offer everything we can that relates to what we do, even if it isn't a high turnover. We gain the occasional long term customer just because we did that one thing nobody else wanted to deal with. It's complimentary(not free), just not primary income/service.
Selfishly I'd say go for it. Ofcourse I'm the weird one who will buy something new v. spend all that time in a pick-n-pull to save $1 then rework the part to make it work