I bought this to take it apart and check it out. I checked with the vendor a couple of times to verify that it is a 348-409 and not a sbc. They call it a sbc tall deck 348-409 distributor. Not sure why they call 348 409 a tall deck small block. They told me it would not fit a sbc or bbc. What the hell, for $58. I'll take a look. My HEI trigger is a ProComp from ShowCars and cost 4x that amount. Looks to be somewhat different . Could be just spare parts for my current one. Should get it in a couple of days, I'll report back.
http://www.ebay.com/itm/201376477518?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
http://www.ebay.com/itm/201376477518?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT