from the Howard Catalog

page 298
I notice that howard has some .936 rollers with a .850 wheel (BBC)
for a MOPAR you can bore for .936 (or 1" or 1.030 etc) to clean up worn lifter bores and not bush- but often you have to bush anyway to get a longer travel
now find the lifters for MOPAR SBM will be harder than BBM as top fuel uses the large lifters