In great respect to these Rare Day 2 pieces my research (memory recall & inquiries with people in the know from back in the day)
I've confirmed some info:
The Hush Thrush Turbos were nothing more than universal replacement, imitations of GM's Actual Corvair Turbo mufflers. Poor imitations at that, using various nipple sizes & 2" flow thru where Real Ones were 2 1/2" inlet/outlet with true large flow tubes/ baffles ..
The Hush Thrush Glass pack cans updated from Early 50's original design for very small C.I. engines such as Flat heads, Nail valve Buick's, 265/283 Chevys Etc....using a Seriously small 1 1/2-1 3/4 flow thru punched knife like construction with various nipple sizes from 1 1/2 to 2 1/2 inches.
Quite ineffective for Performance, geared more towards guys who wanted Noisey attention than HP. The Cherry Bomb Turbos & Glass Packs were made by Maremont and were more performance based in design using 2 1/4-2 1/2 inch flow thru on the 1970 -76 designs. (Turbos were 2 1/2" & nearly identical to GM ....Walker had nice ones too)
That said, GM TURBOS, MAREMONT & WALKER Performance Glass Packs are a Top choice.
Finding NOS Ones is another story........
the Lithoed Woodpecker and HUSH THRUSH paint Scheme, doesn't cut it for my application......
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: VintageMusclecar</div><div class="ubbcode-body">It doesn't get much more "Day 2" than
this.
These were for those who prefered a little more subtlety.

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