thinking about trying one of the relatively inexpensive off-shore 8ba dizzys that are offered on e-bay that have vacuum advance. under $200. including a coil. any real world experiences with them? by comparison, msd's that are similar are over $600. i don't know if msd is now off-shore; for that kind of $$$$ i would hope it was usa made. (i'm trying to keep the whole engine ford, so no chevy conversion)