Wood clamps can be purchased from any good hardware store. In the UK, B & Q, Homebase and Wickes stock these. Online, they can be purchased from Amazon and eBay.
You may find more information on pipe clamps at your local hardware stores such as Lowes. They normally have a wide selection of specialists there to answer any concerns you may have.
Sea foam, also known as meerschaum, can be purchased from a pipe shop. It is also a trade name for motor treatment that can be purchased online. There is also a candy called Sea Foam and it is also avilable online.
Tail pipe, muffler, catalytic converter, clamps and hangers, O2 sensors, header pipe and manifold.
The exhaust valve, the exhaust manifold, the header pipe, the catalytic converter, the muffler and the tail pipe, not to mention the clamps and hangers.
Secure them down with pipe clamps or nail them down with nails and screws
Retort stand
A Ridgid pipe threader is a tool that is used for plumbing. These can be purchased at stores such as Home Depot and Lowe's, but are also available online at Amazon and Ebay.
Buy a 3" MECHANICAL COUPLING at any hardware or plumbing store. Made of rubber and has hose clamps.
remove both hoses from the heater and join them with a short piece of pipe about the size of the inner diameter of the hoses. use 2 hose clamps to sealed and hold the hoses on the pipe. Or- cut the hoses and do the same type joining. later you will need another pipe and two more clamps if you want to rehook it to your heater core.
You can purchase plastic hose clamps online from various retailers such as Amazon, Home Depot, and McMaster-Carr. Just search for "plastic hose clamps" on their websites to find a variety of options to suit your needs.
what kind of "pipe"? solid metal pipe, or flexible rubber "pipe"? number one cause is from aged rubber that dries out and cracks. loose hose clamps, wore a hole through it, cracked thermostat housing, etc.