for $357, yule have an arm that can hold its own w/the hairy beast, uh, i mean the wery best... ;~) when it's time to nab that ridiculously underpriced oracle mk-v for $1200, or sumptin', yule have an arm awreddy - itchin' to move in to its gnu home! :>)
re: exact dimens for the rega, ask stoneaddio-uk or o-l, they'll give ya the info ya need...
good luck, doug s.
ps - a 'table upgrade will make an even bigger difference than the arm upgrade - my going to an oracle from a highly-modded cj walker 'table (same league as the regas, imho), made a *huge* improvement, even tho the cj had a better arm than that which came w/the oracle. my cj had a sumiko premier ft-3, & the oracle came w/a grace 727...