426 stroker, is it reliable?

scrappy, strokeing anything will lower longevity. No way around it. How much shorter depends on the combo. A stroked B wedge (383/400) is good, until you get a shorter piston than 1.5"... Which is any stroke longer than 3.915 IIRC. Longer stroke than that means shorter piston because the deck is short on them. Stroke an RB and you have more room to play with.. But really, 1.5 or shorter pistons and you won't live as long as anything with taller CD than that. The 383 has a shorter stroke than an LA 360... I'd build a 360 if you are seriously going to drive the car another 50K miles with it.

OK, thanks Moper.
I think you've convinced me to keep my money in my pocket and stay with the 360.