Delta Cams is up for sale according to their website.
I would contact them as soon as possible and get as much info as you can about the cam. Lobe centerline, recommneded install, lobe design etc.
Looking at Comp's 2011 catalog there's nothing that really matches but the closest ones suggest that a converter may not be needed. Again see what Delta says. Generally cam manufactures have a sense of when non-stock converter is really needed.
Higher stall converters allow an engine to respond decently even with a less well tuned low and mid range. Its possible that with tuning a snappier response can be had from the existing setup. This takes more effort than the top end tuning but same approach, document the baseline and keep track of the changes and what they did.
