I have the following observations in this regard:
(1) The notion that the Germans failed to produce Me-262 fighters in late 1943 or early 1944 only because of Hitler's insistence they be changed to bombers is a myth. Problems with productionizing the Jumo 004 turbojets to a sufficient state of reliability would have kept the 262 out of substantial use by Germany until late 1944 anyway. To imagine that Japan, with a much less sophisticated engine industry, could have turned the 004 or a domestic type into a reliable powerplant before the end came is unrealistic in the extreme.
(2) All early jets were incapable of long ranges and had far too long takeoff and landing runs to be carrier fighters (which is why initial US plans revolved around mixed-powerplant planes like the Fireball). By early 1946, the McDonnel fighter (I thought it called Banshee but I could be wrong) and Vampire would be available for carrier use. I wonder what value a jet torpedo bomber would have as torpedos have to be released at fairly slow speeds anyway.
(3) Even if the Japanese had hundreds of Me262's they would have made little difference. The B-29 could operate at altitudes difficult even for 262s, and by the late war P-51's would be operating in Japanese skies. Something tells me they might have wasted them as super fast kamakazi planes, since any thought of turning the war around short of a full US invasion was out the window.
(4) IF the Japanese did get effective jets into the air in 1944, Hell yes the USA would buy Meteors and possibly seek license development of the Vampire as well until P-80's came available. The US happily used Spits, Beaufighters, and Mosquitos when US-built planes were unavailable, so I don't know why they would ignore a proven and operational British jet if they needed it immediately.
(5) Bottom line. To have Japan field large numbers of Jet fighters I believe you'd have to have a POD which delays the initiation of the serious US bombing campaign and lengthens the Pacific War into 1946-47 (perhaps a Japanese victory at Leyte, Okinawa, or Iwo Jima). Then again, there is the Bomb. If nukes are ready in 1945 the war ends pretty soon thereafter anyway.