More info on that Frameworks shifter, the aluminum knob for reverse lockout is spring loaded and it's a pull operation, around 3/8 inch to clear lockout. This spring loaded knob requires 2 hands to operate shifter. If you are planning to install a foot brake, very good. If you plan to install a hand brake, not so good (unless you use a protree trans brake). The Frameworks shifter allows either a front or rear cable exit, depends on whether you are pulling or pushing the shift lever on the pg case. And yes, 1st to 2nd shift is one fast simple push of the shift lever.
Aerospace Components makes a very compact pg race shifter, and it's one-handed operation (it's pricey $700+). If you have machining talent, you should consider making a pg shifter, two racers (one flathead with pg and one twin-engine with pg) in our Racing Club made their own tube style shifter. A third racer in our Club had the Neil & Parks tube shifter in their Jr. Fuel car. Simple to operate, compact and lightweight. Alan