They are a medium floody. they will be alot more flooder than the tiny XR-E. You could ask Richard to slice the LH351D dome. This will tighten the beam up considerably.
Keep in mind that the XR-E in its day was the thrower led. If you are looking to get something around the same amount of throw then a different led will work better but again at a loss of lumens. To out perform the original you need another driver if throw is what your after.
This is probably the best equivalent to the XR-E. LED test / review - OSRAM OSLON Black Flat HWQP - still highest luminance of all LEDs to date!