New release Distributor for Slant 6

That one looks like a Ningbo "Ready-To-Run HEI Distributor", which have long been available for the small-block and big-block. I have one on my 273 and cost an amazingly low $45 on (Steve White Performance via ebay), plus another $20 for an e-core coil. The big-block one runs $60. If you can find a direct distributor, should cost similar. Don't put much stock in that "Bosch coil". You could use one off a 1990's Dodge Magnum engine, which looks similar and gives you a mounting bracket (mounted on top of front engine bracket). On my 1964 slant, I used a Mopar e-distributor, triggering a GM 8-pin HEI module and their coil w/ cable (mounted on R inner fender).