
just checking into availability of donor parts as cant keep whole car. So before I start build whats the best place to look for sierra donor parts. Will be needing most things to build a zero
I've a set of sierra front uprights and cal's removed from a donor car, no longer needed, say £20 plus the postage
i think you can get most from gbs when you pick up your kit as they hold some or there good old ebay
post what you need,im sure between us we have enough stuff to build a car or two !!! 
There's a guy on ebay who owns a scrap yard in Yorkshire - Goole all he does is break Sierra's called Sierra shack.
I've been there he's got stuff all over his house and front lawn and has a big industrial unit full of Sierra Bits.
So IMHO don't think there is a shortage just yet.