Code:
-- fly mount
UPDATE `creature_template` SET `name`='Airplane X' WHERE `entry`=40725;-- item 54860
UPDATE `creature_template` SET modelid1=26556 WHERE `entry`=40725;
UPDATE `creature_template` SET modelid2=26556 WHERE `entry`=40725;
UPDATE `creature_template` SET scale=0.7 WHERE `entry`=40725;

-- ground mount
UPDATE `creature_template` SET `name`='Travel Party Tank' WHERE `entry`=32640;-- item 44235
UPDATE `creature_template` SET modelid1=25289 WHERE `entry`=32640;
UPDATE `creature_template` SET modelid2=25289 WHERE `entry`=32640;
UPDATE `creature_template` SET scale=0.2 WHERE `entry`=32640;

-- ground mount
UPDATE `creature_template` SET `name`='Travel Party Tank' WHERE `entry`=32633;-- item 44234
UPDATE `creature_template` SET modelid1=25289 WHERE `entry`=32633;
UPDATE `creature_template` SET modelid2=25289 WHERE `entry`=32633;
UPDATE `creature_template` SET scale=0.2 WHERE `entry`=32633;

-- fly mount
UPDATE `creature_template` SET `name`='Magic Sphere' WHERE `entry`=32158;-- item 44178
UPDATE `creature_template` SET modelid1=34044 WHERE `entry`=32158;
UPDATE `creature_template` SET modelid2=34044 WHERE `entry`=32158;
UPDATE `creature_template` SET scale=0.5 WHERE `entry`=32158;

--Fly mount
UPDATE `creature_template` SET `name`='Fire Pegasus' WHERE `entry`=31717;-- item 43951
UPDATE `creature_template` SET modelid1=25686 WHERE `entry`=31717;
UPDATE `creature_template` SET modelid2=25686 WHERE `entry`=31717;

-- fly mount
UPDATE `creature_template` SET `name`='Agency Airplane' WHERE `entry`=32336;-- item 44690
UPDATE `creature_template` SET modelid1=22878 WHERE `entry`=32336;
UPDATE `creature_template` SET modelid2=22878 WHERE `entry`=32336;

-- fly mount
UPDATE `creature_template` SET `name`='Prototype Robot' WHERE `entry`=23455;-- item 32857
UPDATE `creature_template` SET modelid1=27578 WHERE `entry`=23455;
UPDATE `creature_template` SET modelid2=27578 WHERE `entry`=23455;

-- fly mount
UPDATE `creature_template` SET `name`='Red Wasp' WHERE `entry`=21510;-- item 30609
UPDATE `creature_template` SET modelid1=29058 WHERE `entry`=21510;
UPDATE `creature_template` SET modelid2=29058 WHERE `entry`=21510;

-- fly mount
UPDATE `creature_template` SET `name`='Adventurer Balloon' WHERE `entry`=24743;-- item 34092
UPDATE `creature_template` SET modelid1=32704 WHERE `entry`=24743;
UPDATE `creature_template` SET modelid2=32704 WHERE `entry`=24743;
UPDATE `creature_template` SET scale=0.2 WHERE `entry`=24743;

-- ground mount
UPDATE `creature_template` SET `name`='Traveler Carriage' WHERE `entry`=27684;-- item 37719
UPDATE `creature_template` SET modelid1=33315 WHERE `entry`=27684;
UPDATE `creature_template` SET modelid2=33315 WHERE `entry`=27684;
UPDATE `creature_template` SET scale=0.2 WHERE `entry`=32640;



What do is to import this code into your world db and then just reload your data base and test items like 37719 - 34092 - 30609 - 32857 - 44690 - 43951 - 44178 - 44234 - 44235 - 54860

have fun !