Our 1999 Plus 8 are similar in that our Son and I are 48" chest people and it's snug but does not inhibit spirited driving in any way - the 2009 4/4 Sport is similarly a familiar fit.
The Mrs at 9 stones wet Daughter in Law 8 stones wet, rattle around in both under spirited driving conditions on the rare occasions they give them an airing.
As the 4/4 Sport lives in Cornwall for the summer Joe and his good lady fit well.
I'll measure both cockpit widths this morning when the sun rises
