Just noticed this post and thought to add my 2 cents worth!
I put a rebuilt 140 Type 033 dizzy in my B18 engined 544 and after repeated points issues that the rebuilder refused to address, I decided to go Pertronix.
If anyone is considering a purchase however, my experience may be of interest:
IPD has excellent info on how to select and match select the correct unit, so
I called to order one but they were out of stock.
I then ordered one {same series} from Amazon. Fit was not even close.
I next ordered another from a reliable supplier on Ebay. Same number - different style - did not fit.
Tried again, another supplier, same number - another style - same result.
(All of them were listed as fitting my 140 distributor, and the prices ranged from about $80.00 to $165.00}
Finally I called IPD again and new stock had arrived! I got it 2 days later.
The fit was perfect and installed in 10 minutes. The car has never run so smoothly.