I purchased all of these new to do this conversion but decided to go down a different route so these should be all of the bits needed for the conversion, you'll just need to take your old thermostat out, cut out the centre bit with a Dremmel and refit the base and rubber seal so the old thermostat housing seals. Included is 1 x PRT thermostat 82c light spring, grey,1 x 1m of Samco silicone hose, 1 x alloy T piece, 6 x stainless steel hose clips. All unused but I have marked up the exits on the PRT with a marker pen. Now moved on to Ebay