thermostat housing bolts replacement

I did not find any information as to the size of the bolts. But most makers use common sizes with common head sizes as it saves money and assembly time.

So a common 1/4" bolt takes a 7/16 or 3/8" wrench
5/16" uses a 1/2" wrench
3/8" uses a 9/16" wrench

Metric is somewhat similar but they do have a few extra "standards" so if you go and put a socket on the bolts in question, that same socket should fit the replacement bolts.

Yes it was a success but now I have worse problems now I have no spark and the tacometer just sits when I try to start it and no engine light eather but I get fuel so I replaced my ignition coil pack and nothing I replaced the crank shaft position sensor and nothing then I replaced the ignition module and nothing so I check the to the connection to the ignition module to see if I'm getting power to it and nothing I did get power with the ignition + prong and I got 0.12 volts so maybe its the cce power relay next to the fuel pump relay

Please ask this as a new question. That will let more people see it. When you add it to your original it sort of gets buried on the site.