Yes, if you are asking about JE Pistons.  They will make any bore size, ring thickness, first ring land distance, pin diameter, compression height, or dome, ceramic coating the crown, coating the skirts, etc.  You tell them what bore size you need, and they will build the clearances in the piston.  Mine have .0045" clearance in the 3.812" bore.  Joe-JDC 

JDC

Joe, does that include forged flat-tops/w no valve reliefs and metric rings for EBU and C2 rods? Thanks.

Ted has all the information to order JE Pistons in any compression ratio or head.  He made epoxy copies of the -G heads combustion chambers, (both left and right) and sent them to JE for them to duplicate.  He also has epoxy combustion chambers of the Mummert heads.  If you need assistance in ordering, I would suggest calling Ted.  Lead time on parts is an unknown right now.  Joe-JDC

JDC

Joe, would you mind sharing the specs on the forged pistons you ordered from JE? I'm in the process of trying to get my pistons ordered and would like a reference. If for competitive reasons you're unable to I understand. thanks!

DiLL

Let's just say that I would not polish another one for a customer like I did that one for EMC.  Many hours in the porting booth with cartridge rolls, carbides and stones to take off the sharp edges, round over the counterweights leading edges, and polish everything but the bearing surfaces.  Ted had to remove a lot of weight for the balance since we were using custom lightweight rods, and forged JE Pistons.  Joe-JDC  

JDC

That crankshaft started out as a stock cast crank? It's beautiful. A lot of work had to go into it to reach that point. How many hours?

Here are a couple more pics of Joe’s engine with the windage tray.  The original equipment 351W bolts with their built-in studs do use spacers at the main caps to both compensate for the extra length of the bolt and to get the windage tray at a more appropriate height.  Those four 351W bolts that were used were originally designed for engines with rear sump pans of which there would be one bolt in each engine to hold the rear sump oil pickup in place.
  

Lorena, Texas (South of Waco)

Those two pictures were of my 303 Y in the early stages of fitment.  You will notice the crankshaft is completely polished, rounded edges for windage control. It uses grade 8 main bolts, 289 Windage Tray.  Four of the bolts were swapped for 351W windage tray studs.  The windage tray had to have the holes moved outboard and enlarged for the Y block spacing.  Joe-JDC

JDC

Ted, are you using main studs or bolts on the engine? Stud girdle/windage tray?

Here are a couple of pictures of the Y crankshaft with Honda journals.
  

  

Lorena, Texas (South of Waco)