Welcome
@tuscan to the forum. I see you have a Tartan 33. Nice boat!
I did a complete rig replacement myself way back in the year 2000, for a Catalina 36. I bought the mast extrusion directly from Catalina, when they were still in Woodland Hills, CA. It was 52'2", and they had to weld the 2'2" piece to the 50' piece, as 50' was the max length from the extruder. They originally misquoted the price, giving me their cost, and I ordered it at that figure. When they balked, we ended up splitting the difference, so my recollection was I paid something like $1,800 for the piece. Shipping was going to be about $900, so I asked if they could just throw it on a truck bringing a boat to my area and they agreed. I paid the driver a fee to make the side trip to my boat yard: $50!!! A miracle.
I had all the old mast pieces and removed all the hardware myself, making a detailed set of drawings for where it all went. One sticky part was sourcing the very high strength Cherry rivets for attaching the plates for the lowers to the mast. The minimum quantity was 100, I think, and they were something like $12 a piece. I talked to an engineer at Cherry, and told him I was an engineer, and he "sampled" me - asked how many I needed for my "experiments." I told him 12, and he sent 13, and I only paid for shipping. However, I needed a big puller for these which cost me $120.
It was a time consuming and fussy project, especially the wiring, and cutting the top to fit the sheave box properly. But when I was done I knew I had a brand new mast and standing rigging.
Now you'd probably have to double, or even triple the prices I paid.
I recommend Rig-Rite as a supplier for this project. It appears from their site that the Tartan 33 used the Kenyon 4270 section. All of the necessary hardware is on this page, too. And, they can build the entire rig for you:
Rig-Rite, Inc.: Kenyon 4270 High Performance Section
They are in Rhode Island, so shipping will probably not be cheap.