You had me worried Jim
Have Specsavers still got their offer on??????
Seriously..The 330 is a highly developed varition of a theme and the 340 a four engined version of the 330, or the other way round.
There is probably little in common but they do have much the same general appearance. |-)
I doub't if there is much in common between the latest 737 and the first off the line either.
Oh for the old days :-(
Oh and I like that livery more than TNT which I think garish

.......this is simple and clean
I know Dave had to work hard to get it to look just right with texture distorting and logo and type sourcing and the result is well worth the effort.
Garry