as above looking to replace the top and bottom ball joint (the one that goes on the wishbone) does any body now what car they are from

Ok... first question, what car have you got? Locost or something else?
For a locost I think the bottom one's a maxi, the top a transit drag link. I'm sure I'll be corrected if wrong

sorry thought i put it it an mk indy

Transit top and Maxi Bottom

it needs to be a transit drag link (m18x1.5 right hand thread) istr the track rod end is m20

found these part numbers for the drag links. may be of use, but double check them

Locost Top Ball Joint -- Transit 1965 to 84 Drag Link End Right Hand Thread

Ford Part Number :17996516

QH (Quinton Hazel) Part Number QD1117RHT

AP (Automotive Products) Part Number TA298

Moprod Part number MDL1117R

Heyd Part Number F22.73

Lemforder Part Number 000.111.017.536

Redaelli Part Number F35

TRW Part Number 15ES0874

TVA Part Number F7.1

Unipart Part Number GSJ112

Frap Part Number 168

Ehreneich Part Number 022-8146-134-291

[Edited on 24/11/10 by indykid]