hell m8 i know a bit bout the 30 irs sierra
they were limited editions available only in S A
a good example could fetch around R30 000 in S A about £2600
they came with 30 essex v6 motor with efi fuel injection pushing out around 118 kw
there was a turbo conversion also available with the power uped to arounnd 157kw
the essex motor in S A was quite popular with ford fans along with the sierra XR8 and the cortina XR6 INTERCEPTOR also using the old essex lump , the ford fans racing these motors were racing them for years quarter mile and top end and were ruling the streets over all other competition the best quarter to date was an impressive 11.8 normal aspirated 3.8 stroker with interceptor kit top speed was around 155mph trust me m8 i still have the interceptor cortina and it still kickes bm ass after all these years.