thanks for your replys,

i think i need to give out a bit more info,

the engine is a 1978 chevy 305ci small block with a performer inlet manifold with no obvious hole for the temp sender. however there is an indent on the drivers side close to the thermostat housing, is it possible to drill and tap this to accomodate the sender, or is there any other option.

ref to the oil filter holes above oil filter housing still not clear what to do there.

thanks