Recent return to RC - Some Pred advice needed

[Bug]

After a long absense I've got back into RC, just getting a B4 on the road at the moment (first club meeting next week!), but I have a boxed unbuilt X10 in the cupboard...

Will an X10 take a hard cased Lipo stick pack? A read of the forum suggests saddle Lipo will fit with a little work - but will I need an X11 chassis for stickpacks (I've got a pred ETQ chassis too - and a TQ98 but I'd rather not butcher these, but they do look a little longer) I'm happy the servo will go in front of the motor (ala classic pred) - but this looks doable with X10 bits and some patience, just don't want to have to cut any material out of the tub to put in this lipo) - so who's done it? And what did you have to do to secure the battery?

Also - do Team Xtreme still support Pred touring cars? I've got enough spares to run one, and X10/X11 diffs might fit (read as: will make fit!) But if I crash and/or have a major breakage if there's no one at all for backup (not many of these on eBay to canabalise either!).

Thanks for your help chaps.

P.S. Will be getting much more practice in before taking out a vintage TC!